Typographical casting machine



21, 1940. "R. F. A. DENKER I 2,201,336

. TYPOGRAPHICAL CASTING MACHINE Filed Dec. 19, 1938 JV g H17 3 $4 27 6 J0 a g 1 52 311 fimmymfl k v I -Z0 INVEYNTOR J AITORN-EYS fiber." 9 6 Patented May 21, 1940 4 UNITED STATES PATENT OFFICE TYPOGRAPHICAL CASTING MACHINE Rudolf F. A. Denker, Denison, Iowa Application December 19, 1938, Serial No. 246,745

1 Claim.

5 is to provide in a typographical casting machine a mold disk guide so constructed and arranged as to be adjustable relative to the mold disk to preclude axial movement of the mold disk relative to the guide and thereby insure proper alignment of the back knife at all times with the mold with a resultant uniformity in the height of the slug trimmed by said knife.

Another object of my invention is to provide a device of the character described capable of being attached to typographical casting machines already in use without modifying the latter.

An important object of my invention is to provide a device of the character described which is simple in construction, durable in use, eflicient in operation and economical in manufacture.

Other objects and. advantages will be apparent from the following description, appended claim and annexed drawing.

Referring to the drawing wherein like reference 25 characters designate like parts throughout the several views: Figure 1 is a face view, partly in section, of

a mold disk of a typographical casting machine and the driving pinion therefor and illustrating 30 my invention as applied thereto.

Figure 2 is a fragmentary face view of the mold disk looking in the opposite direction from Figure 1.

Figure 3 is an end elevation thereof.

35 Figure 4 is a detail sectional view taken on the line 4-4 of Figure 3.

Figure 5 is a detail sectional view taken on the line 5-5 of Figure 2.

Figure 6 is a detail face view of a section of 40 a guide constructed in accordance with my invention.

Figure 7 is a disassembled top plan view of a guide constructed in accordance with my invention.

45 In practicing my invention, I provide a mold disk 5 of ordinary construction and having provided on the periphery thereof a ring gear 511 meshing with a pinion SD for rotating said disk. The disk is equipped with molds 6 and is adapted 50 to be axially advanced to effect engagement of one of the molds with a matrix (not shown) to permit molten metal to be pumped into the mold by the operation of plungers (not shown) to cast a slug in said mold.

l After the slug is cast, the disk 5 is retracted to carry the mold out of contact with the matrix and said disk is then rotated in an anti-clockwise direction by the pinion 5b to carry the. slug from casting to ejecting position. During the rotation of the disk 5, the active mold is swept past a 5 stationary back knife I which is arranged behind the disk and said knife trims off any projections or surplus metal that may adhere to the rear edge of the slug. The backknife I is adjustably mounted in a carrier 8 fashioned on the end of an 10 arm 9 extending from a hub 9a connected to the disk 5 for axial movement therewith and rotary movement relative thereto. Ordinarily, the outer end of the arm 9 has connected thereto a disk guide integrally fashioned with sections embracing the disk and having a running fit therewith. The guide serves to effect axial movement of the back knife with a like movement of said disk. So far as described, the parts, the construction and mode of operation, except as hereinafter pointed out, may be the same as those embodied in commercial Linotype machines and in themselves constitute no part of the present invention. Due to rotation of the disk relative to the guide,

considerable wear develops causing axial play 5 between said disk and guideand with a resultant play between the edge of the rear knife and the rear faces of the slugs causing the knife to trim the rear faces of the slugs in an uneven manner.

To overcome this disadvantage and. undesirable feature I eliminate the ordinary disk guide and substitute in lieu thereof my novel form of disk guide Hi.

My novel form of guide comprises a block H having separable and adjustable sections l2 and I3. The section I2 is fashioned on one face M with a rib l5 having a laterally extending collar l6 accommodating therethrough a screw l1 securing said block to the outer end of the arm 9 as clearly illustrated in Figure 4 of the drawing.

One side of the block, adjacent the rib I5, is formed with an arcuate shaped kerf defining a pair of oppositely disposed walls I9 and 29 formed in the sections l2 and 13 respectively and which coact to embrace the sides of the disk 5. The opposite side of the block is formed with a recess 2| and accommodates therein the pinion 5b whereby the latter meshes with the ring gear 5a formed on the periphery of the disk 5 as clearly illustrated in Figure 1.

The recess 2| intersects the kerf and divides the section l3 into spaced auxiliary blocks 22 and the section I2 into spaced block seats 23. The auxiliary blocks 22 are provided with inwardly extending dowel pins 24 received in sockets 25 formed in the seats and also with screw apertures 2'! registering with threaded apertures formed in said seats. The apertures 21 receive therein set screws whereby the auxiliary blocks are connected to the seats. Interposed between the auxiliary blocks and the seats are shims provided with openings for receiving therethrough the dowel pins and set screws. The shims serve to space the walls l9 and 20 relative to each other for proper running fit with the sides of the disk 5.

Obviously, when wear occurs on the sides of the disk and/or walls l9 and 251, a desired number of the shims may be removed from between the seats and auxiliary blocks and thereby decrease the distance between the walls to compensate for said wear. By thus maintaining the walls in running engagement with the disk, axial play of the disk relative to the guide block is eliminated, thereby maintaining the rear knife in proper alignment with the rear faces of the mold to effect a uniform shearing or trimming of the slugs at all times.

From the foregoing it will be apparent that many advantages accrue in the operation ofa typographical casting machine equipped with my novel form of mold disk guide not heretofore obtainable, for instance; complete control of the path of the mold disk as it rotates on its bearing during which operation the back knife trims the Linotype slugs to standard type height; protection of thenbacks of the molds contained in the mold disk by eliminating contact thereof with the back knife and which would ordinarily render them unfit for use; eliminating the tendency of the mold when the slug therein is being trimmed to creep away from the back knife should the mold disk have axial play; the rigid maintenance of the mold against the matrix during a casting operation and subsequent ejection of the slugs.

Obviously, by the use of my device, the life of the mold disk guide is indefinitely prolonged together with that of the mold disk. The replacement of the molds due to damage by the back knife and likewise the replacement or sharpening of the back knife due to engagement with the molds is also eliminated or minimized.

It is obvious that the invention is not confined to the hereindescribed use therefor as it may be utilized for any purpose to which it is adaptable. It is therefore to be understood that the invention is not limited to the specific construction as illustrated and described, as the same is only illustrative of the principles of operation which are capable of extended application in advance forms, and that the invention comprehends all construction within the scope of the appended claim.

What I claim is:

In a typographical casting machine of a type equipped with a carrier having a back knife normally fixed thereon and a mould disk axially movable with and rotatable relative to said carrier and disposed in a definite spatiality with respect to said knife for trimming the rear ends of type slugs carried by said disk by said knife during rotation of said disk relative to said carriergan d knife for uniformizing the lengths of said slugs and substantially preserving the precast heights of the respective face-blocks, a guide block normally immovably fixed to said carrier and fashioned with relatively adjustable sections rotatably receiving said disk and coacting therewith for maintaining said disk in said spatiality, shims interposing said sections and selectively detachable for eifecting relative adjustment of said sections with respect to said disk while said block is immovably fixed to said carrier for repositioning said disk to said spatiality when said disk is wearingly advanced thereaway, and means securing said sections together about said disk.

RUDOLF F. A. DENKER. 

